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Using Experimental Design to Assess the Capability of a System

Summary: Experimental design techniques were applied to the task of characterizing the inspection capability of the machine vision component of an automated laser hole-drilling and inspection system for gas turbine engine manufacturing. The system uses a laser to drill very small cooling holes in gas turbine engine combustor rings and a machine vision component to inspect the holes. The machine is designed with a closed loop algorithm to adaptively control the laser drilling operation based on the inspection results. An experiment with blocking factors provided a disciplined framework for data collection to characterize the capability of the vision system component during the development phase. This experiment provided a better understanding of the system's capabilities and the user's design requirements, which has yielded system improvements.

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  • Topics: Design of Experiments
  • Keywords: Blocking,Capability,Case study,Automation,Design of experiments (DOE)
  • Author: Hubele, Norma Faris; Beaumariage, Terrence; Baweja, Gurshaman; Hong, Suck-Chul; Chu Rey
  • Journal: Journal of Quality Technology